Automatic boring-machine.



Patented lan. 22, |90I.

4 Sheets-Sheet l.

mm( l w J. w. BROWN, 1R.

(Application led Apr. 11, 1900.)

n IMI o n f AUTOMATIC BORING MACHINE.

(No Model.)

No. 666,486. Patented 1an. 22, |901.

- J. w. BnowN,1n. AUTOMATIC BORING MACHINE.

(Applicz'ion mad Apr. 11. 1900.; #No Model.) 4 Sheets-Sheet 2.

No. 666,486'. 'Patntd lan. 22, |90I.

.1. w. nowu,1n.

AuToMATlc Bosma mAcnma (Application lad Apr. 11. 1900.)

{ No Model.) y 4 SheetsnSheet 3.

tra raras ATENT OFFICE.

AUTOMATIC BORING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 666,486, dated January22, 1901.

Application filed April Il, 1900.

T0 a/ZZ whom, it naat/concern- Be it known that I, JOHN WILSON BROWN, Jr., a citizen of the United States, residing in Philadelphia,Pennsylvania, have invented certain Improvements in Automatic Cutting orBoring Machines, of which the following is a specification.

My invention relates to certain improvements in machines forautomatically boring or cutting irregular objects. In machines of thistype the articles to be bored or cut are placed in a hopper and areautomatically fed to the machine and chucked therein. The necessary cutsare then made and the article is released and another article is fedfrom the hopper automatically.

In the accompanying drawings, Figure l is a side view of an automaticboring or cutting machine to illustrate my invention. Fig. 2 is asection on the line 2 2, Fig. l. Fig. 3 is an enlarged sectional planView. Fig. 4 is a section on the line 4 4, Fig. 3. Fig. 5 is a plan viewof a portion of Fig. 1, and Fig. 6 is a View of one of the articlesbored on this machine.

My invention is applied to one form of an automatic screw-machine, and Ihave shown in the drawings only those parts of the machine that aredirectly connected with the invention.

The invention relates to the mechanism for feeding the article to thechuck and .the mechanism for making a concentric cut and an eccentriccut in the article while chucked.

I have shown in Fig. 6 of the drawings a view of one of the articleswhich this machine is especially designed to cut, although it will beunderstood that the articles may be varied without departing from myinvention. In order that the machine can be readily understood, l wouldstate that the igure illustrates the barrel of a rotary pump. Theportion a: of the barrel is concentric, while the portion is eccentric.The machine I will proceed to describe bores the concentric portion andthen bores the eccentric portion, so that the interior of the barrel isfinished by the one machine without rechucking.

A is the base of the machine.

A' represents the bearings for the chuckshaft B. On the chuck-shaft is agear-wheel K, which meshes with gears on a driving- Serial No. 12,479.(No model.)

shaft. On the end of the shaft B is the chuck proper, B,which chuck ishollow and is adapted to receive the piece to be out, as shown in Fig.4, these chucks being usually made with means for locking the piece tothe chuck, so that it must turn with the chuck, and the piece hasusually a lug or projection which enters a recess in the chuck, so thateach piece will bear the same relation to the chuck and cuttingmechanism.

Mounted in front of the chuck is acarriage D, adapted to tranverse waysd. On one end of the carriage D is a hopper F., in which the articlesare placed one above another, and at the opposite end of the carriage isaslide-rest F. The carriage D is moved across the machine by theordinary arms D', pivoted at d' to the frame of the machine and actuatedby a cam D2 on the operating-shaft D3. This operating-shaft iscontrolled by any suitable mechanism for giving it a rotary motion at agiven time. The hopper E consists of a vertical chamber e, open infront, and directly below the chamber is a rest e' for the lowermostarticle.

b is an ejector operating in the chuck B', in which there is a slot orrecess b' for a use described hereinafter. The ejector mechanism isconstructed and operated as fully set forth in the application of Brownand Shellenbach, Serial No. 25,674, filed August 2, 1900. Opposite theejector and on the same level is a plunger g, supported on a turret G,the whole being constructed and automatically operated by any of thewell-known methods commonly used in this form of apparatus.

The slide-rest F can move longitudinally on the carriage D, and mountedon ways on said slide-rest F is a tool-slide F', carrying the twocutters f f', the two adjustable abutments f2 f5, and a lip f5. Thecutters may be of any suitable shape, according to the work to beperformed, and are detachably secured to the slide F', as shown in Fig.3. The head g2 of the turretplunger g' extends between the abutments andthe lip f5 of the tool-slide F', so that the turret not only moves thetoolslide F' forward, but also returns it, dispensing with a spring.

Resting between a flange d2 on the carriage D and a flange f6 ou thetool-slide F' are two wedges J and I. The wedge J rests against IOO theiiange d2 and can be adjusted'by means of a screwj. The wedge I moves onthe wedge J and is forced out by means of a spring i', mounted in asocket in each wedge, as shown in Fig. 3. The wedge I is forced in by aslide H, described hereinafter. As the wedge I is forced in it moves theslide F forward against the pressure of a spring f4, which as soon asthe slide is relieved forces it against the stopscrew 7c. This screw isso adjusted as to allow the wedge I to clear the slide, as shown in Fig.4.

By manipulating the screw k the size of the circular portions"l of thearticle to be cut can be varied, and by manipulating the screwj the sizeof the eccentric portion can be varied.

The slide H, which actuates the wedge I, is mounted on ways a' on thebearings A' for the spindle B, and secured to or forming part of thegear-wheel K is a cam k. This cam acts upon the roller h on the slide H.A spring h2 tends to keep the roller in contact with the cam, so that asthe cam rotates the slide will be moved in and out.

The slide H is reciprocated during the operation of the machine, onlyacting upon the wage 1 when its headz' is in line with the head h ofsaid slide. When in this position, it will move the wedge forwardagainst the pressure of the spring t.

The operation of the machine is as follows: The machine is set forcutting a certain article-say, for instance, the pum p-barrel shown inFig. 6. The barrels in the rough are placed one upon another in thehopper. The rst movement of the carriage D is to bring the hopper E. inline with the chuck. The elements g and b grasp the article and thehopper recedes. Then the article is moved toward the chuck, and when thelug :c2 on the article is in line with the recess b of the chuck thearticle is forced into the chuck. The tur ret then recedes and turnsuntil its plunger g is in line with the chuck, and the carriage D ismoved so that the cutter will be in position to cut the concentric innersurface @c of the article. The tool is gradually pushed into the articleas it cuts by the turret Gr, its plunger g pushing against theabutmentf2. When the cut has been made, the tool-slide F' is returned bythe head g2 on the plunger g' engaging the lip f5. When the tool isclear, the carriage is again moved forward and also given a transversemovement until the cutterf is in position to cut the eccentricsurface'of the article. The head of the wedge I is then in line with thehead h of the slide H and the abutment]c3 is in line with the plunger g.As the plunger g moves forward it forces the cutter f into the article.At the same time motion is imparted to the wedge I by the reciprocatingslide H, and this motion is im-` parted to the slide F and tool-slideF', and thus the cutter f moves toward and from the center of the chuckas the article is turned, accurately cutting the eccentric portion. Assoon as the cut is made the cutter is withdrawn and the article isdischarged from the chuck by the ejector b.

It will be seen that all that is necessary is to set the machine to thearticle to be bored, to keep the hopper loaded, and the cutters in goodcondition and the machine will automatically chuck the articles, cutboth their concentric and eccentric surfaces, and discharge them whenfinished.

While I have described -my invention as cutting a particular piece, itwill be understood that it can be set to cut different articles and willcut either the interior surface, as described, or the exterior surface.

I claim as my inventionl. The combination in a machine for cuttingconcentric and eccentric shapes, of means for holding and rotating thearticle to be cut, two cutting-tools, a carrier therefor, means forfeeding'the tool-carrier to cut the concentric portion, and means forimparting a longitudinal and lateral motion to the tool-carrier to cutthe eccentric portion, substantially as described.

2. The combination in an automatic lathe, of a chuck, means for rotatingthe chuck, a slide carrying cutters, a turret, a plunger on said turretconstructed to move said slide 1ongitudinally on the lathe and means forsimultaneously giving a transverse motion to the slide while one of saidcutters is in action, substantially as described.

3. The combination of a chuck, a slide carrying two cutters, meansforfecding the cutters forward toA make a cut, with means for movingfirst one cutter in line to make a cut and then another cutter in lineto make another cut and means for giving said slide an independentlateral motion while one of the cutters is working,substantially asdescribed.

4. The combination of means for holding and rotating the article to becut, a cam, a slide actuated by the cam, a transverse slide carrying twocutters, means for forcing first one cutter and then the other cutteragainst the article to be bored, a wedge acting on the slide, said wedgewhen moved into position so that the second cutter will act being inline with the slide actuated by the cam, so that the cutter will begiven a lateral motion independent of the forward feed, substantially asdescribed.

5. The combination of means for holding and rotating the article to becut, a carriage transversely movable in respect to the article, saidcarriage having a hopper and a slide, two cutters carried by the slide,a turret, means for actuating the turret, a wedge carried by the slide,a longitudinal slide on ways on the fixed part of the machine, a cam foractuating said slide so as to move the wedge, and a spring forretracting the wedge, substantially as described.

6. The combination in means for holding and rotating articles to be cut,a carriage transversely movable in respect to the article, a slide onsaid carriage, a tool-slide on the IIO slide, tools carried by thetool-slide, means for moving the tool-slide longitudinally, two wedgesbetween the slide and the carriage, means for adjusting one of saidwedges, and means for operating the other wedge during the time theslide is fed forward, substantially as described.

7. The combination with means for holding and rotating the article t0 becui, of atrans Versely-movable carriage, a slide mounted thereon andalso movable transversely, a toolslide movable longitudinally on saidslide, tools carried by the tool-slide, means for automatically movingthe said tool-slide, means for moving the slide forward and anadjustable stop on the carriage for the slide, substantially asdescribed.

8. The combination of means for holding and rotating the article to becut, a slide, tools carried thereby, a headed plungeradapted to feed thetools forward, and a ange on the slide engaged by the headed plunger` asit recedes, substantially as described.

9. The combination of a chuck for rotating the article to be cut, atransversely-movable carriage, a hopper on one end of the carriage and aslide on the opposite end, a tool-slide carried by the slide, a toolthereon, means for operating the carriage, means for feeding the toollongitudinally, and lneans for reciprocating the tool transversely asthe chuck revolves, substantially as described.

l0. The combination of achuck for rotating the article to be cut, atransversely-movable carriage, a hopper on one end of the carriage and aslide on the opposite end, a tool-slide carried by the slide, a toolthereon, means for operating the carriage, means for feeding the toollongitudinally, and means for reciprocating The tool transversely ateach revolution 4o of the chuck, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN WILSON BROWN, JR.

Witnesses:

WILL. A. BARR, Jos. H. KLEIN.

